Effect of the nature of fillers and ultraviolet irradiation on the mechanical properties of epoxy composite coatings |
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Authors: | A. V. Buketov P. D. Stukhlyak I. G. Dobrotvor N. M. Mytnyk N. A. Dolgov |
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Affiliation: | (1) Ivan Pulyui State Technical University of Ternopil, Ternopil, Ukraine;(2) Pisarenko Institute of Problems of Strength, National Academy of Sciences of Ukraine, Kiev, Ukraine |
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Abstract: | The effect of ultraviolet irradiation, the physical nature and percentage of fine-grained fillers on the mechanical properties of composites has been studied. It has been found that the ultraviolet irradiation of epoxy compositions causes a decrease in the adhesive strength and an increase in the cohesive strength of protective coatings. This has been proved to be due to a change in the course of physicochemical processes at the filler/epoxy oligomer interface, owing to which external surface layers, which have a considerable extent and a high degree of cross-linking, are formed around fine particles in the matrix. Translated from Problemy Prochnosti, No. 4, pp. 117–123, July–August, 2009. |
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Keywords: | epoxy composite coatings filler creep elastic modulus adhesive strength |
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